Patent US3693441A successfully refreshed from Google Patents.
US3693441A
Expired / Lapsed
US
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Fluid stream sensing device
Assignee: Individual
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Filing: 1970-10-26
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Granted: 1972-09-26
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Expires: 1990-10-26
Abstract
Abstract A fluid stream sensing device has a casing and therein a transparent measuring tube and within the same a sensing body arranged to be floated by incoming fluid stream and lifted by same to a level being representative of the parameters of said stream to be measured. The tube is provided with a series of compensating openings on a line parallel to the longitudinal tube axis, and the tube is composed of easily assemblable shells.
Inventors
- 👤 Heinz-Jurgen Von Obstfelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:08
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
In a fluid stream sensing device of the type having a transparent tubular casing including apertured terminal caps for inflow and outflow, and inside said casing a transparent measuring and sensing tube defining with said casing an annular space in communication with said outflow, said tube having discharge openings intercommunicating between the interior of said tube and said annular space, a sensing body operable to be floated slidably arranged in said tube, the respective position of said sensing body in said tube corresponding to the prevailing parameters of said fluid stream, the improvement comprising said tube being disconnectably assembled of at least two adjoining longitudinal tube sections, said terminal caps including internal walls defining bores the end portions of said sections being surrounded and held in adjoining position by said bore walls.
Claim 2
Dependent Claim
132 words
In a fluid stream sensing device of the type having a transparent tubular casing including apertured terminal caps for inflow and outflow, and inside said casing a transparent measuring and sensing tube defining with said casing an annular space in communication with said outflow, said tube having discharge openings intercommunicating between the interior of said tube and said annular space, a sensing body operable to be floated slidably arranged in said tube, the respective position of said sensing body in said tube corresponding to the prevailing parameters of said fluid stream, the improvement comprising said tube being disconnectably assembled of at least two adjoining longitudinal tube sections, said terminal caps including internal walls defining bores the end portions of said sections being surrounded and held in adjoining position by said bore walls.
Claim 3
Dependent Claim
28 words
The device of claim 1, wherein said bores in said terminal caps are tapered thereby positively pressing said end portions of said sections together in said adjoining position.
Claim 4
Dependent Claim
26 words
The device of claim 1, said sections being in contact with each other along predetermined contact surfaces, and an elongated discharge opening between said contact surfaces.
Claim 5
Dependent Claim
53 words
The device of claim 1, wherein said measuring and sensing tube is provided in its upper portion with a wall closing the top of said tube and with external peripherally distributed centering projections extending towards the inner wall of said casing and defining outlet spaces communicating with said annular space and said outflow.
References Cited (Backward Citations)
US1450611A
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US2003474A
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US2130981A
Cited
US3141331A
Cited
US3208284A
Cited
US3436500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |